How many institutions held QTRX - Quanterix Corp - Common Stock, $0.001 par value per share in Q3 2023?

157 institutional investors reported QTRX - Quanterix Corp - Common Stock, $0.001 par value per share for Q3 2023. Use the holders table for investor-level position and value details.

Quanterix Corp - Common Stock, $0.001 par value per share (QTRX)

Q: What does CUSIP 74766Q101 represent in this 13F holders report?

CUSIP 74766Q101 is the security identifier for QTRX - Quanterix Corp - Common Stock, $0.001 par value per share used to aggregate holder disclosures.

CUSIP: 74766Q101

Q3 2023 13F Holders as of 30 Sep 2023

Security type / class: Equity / Common Stock, $0.001 par value per share
Total 13F shares: 32,368,786
Total 13F value: $878,491,034
Share change: -147,736
Put/Call ratio: 118%
SEC-reported price per share: $27.14
Number of holders: 157
Value change: -$2,866,513
Number of buys: 81
Number of sells: 54
Shares outstanding: 47,133,168

Security key

74766Q101

Report period

Q3 2023

Institutions

157

Top holders

QTRX full security history Ownership snapshot Full 13F holder table Newer quarter: Q2 2026 Quanterix Corp SEC filings Quanterix Corp company facts Quanterix Corp 13D/G history

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 74766Q101

Newer quarter: Q2 2026

Recent filing periods:

Q2 2026

Ownership snapshot

Top reported holders of QTRX - Quanterix Corp - Common Stock, $0.001 par value per share (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

Camber Capital Management LP

Disclosed value leader

Camber Capital Management LP

Comparable rows

15/15

Latest evidence

30 Jun 2023

13F Lead comparable stake: 7.3% Showing 1-6 of 15 holder rows.

Quick read

Camber Capital Management LP leads the comparable SEC ownership view at 7.3%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens Camber Capital Management LP's linked filing trail.

Comparable ownership Top 5

Camber Capital Management LP 7.3%

BlackRock Finance, Inc. 6.1%

FMR LLC 4.5%

VANGUARD GROUP INC 4.2%

Portolan Capital Management, LLC 3%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
Camber Capital Management LP	13F Company 13F	7.3%	$77,234,000 3,425,000 shares	—	30 Jun 2023
BlackRock Finance, Inc.	13F Company 13F	6.1%	$64,474,465 2,859,178 shares	—	30 Jun 2023
FMR LLC	13F Company 13F	4.5%	$48,120,888 2,133,964 shares	—	30 Jun 2023
VANGUARD GROUP INC	13F Company 13F	4.2%	$44,437,820 1,970,635 shares	—	30 Jun 2023
Portolan Capital Management, LLC	13F Company 13F	3%	$31,944,849 1,416,623 shares	—	30 Jun 2023
GILDER GAGNON HOWE & CO LLC	13F Company 13F	2.7%	$28,597,960 1,268,202 shares	—	30 Jun 2023

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q3 2023

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

157

32,368,786

Rows available

157

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q3 2023 vs Q2 2023 Across Filers

Q2 2023 holders

136

Q3 2023 holders

157

Holder diff

Investor	Q2 2023 Shares	Q3 2023 Shares	Share Diff	Share Chg %	Q2 2023 value	Q3 2023 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend